produce for the endogenous formation of an international counterterror coalition. We show that there are quite reasonable … counterterror coalition, holding the choices of all other nations as given. The incentives to join the coalition are the group …-specific benefits from retaliation enjoyed by each coalition member, the relatively lower spillover benefit from retaliation enjoyed by …

of countries is self-enforcing. It is shown that there always exists a rather small stable tax coalition. For some subset … of the parameter space the grand coalition may be stable as well, even if the total number of countries is large. The … small stable coalition is not very effec- tive in mitigating the inefficiency of the non-cooperative Nash equilibrium. The …

We investigate the computational complexity of several decision problems in hedonic coalition formation games and … either core stability or strict core stability is under consideration, the existence problem of a stable coalition structure … stable coalition structure and of an individually stable coalition structure turn out to be NP-complete in the strong sense …

multilateral coalitional structures are not stable; however, the size of the stable coalition increases as the economy expands. …

We investigate the computational complexity of several decision problems in hedonic coalition formation games and … either core stability or strict core stability is under consideration, the existence problem of a stable coalition structure … stable coalition structure and of an individually stable coalition structure turn out to be NP-complete in the strong sense …

The introduction of a framework for optimal coalition formation using data envelopment analysis (DEA) methods is the … focus of this paper. Simple examples illustrate how DEA is useful in formulating coalition models and deriving optimal …

are used: relations between the players and the probability of coalition formation. We suggest and study the sufficient …